The Northern Territory Police Force is investigating an aggravated assault that occurred in Malak last night.

Around 11:20pm, the Joint Emergency Services Communication Centre received a report of youths trying to break into a residence on Tabletop Place, Malak occupied by a female in her 80s and a male in his 50s.

The offenders allegedly attempted to enter the residence via locked front and rear doors before throwing large rocks through numerous windows including bedroom windows, narrowly missing the female as she slept.

Up to four male youths including one armed with a blunt weapon, attempted to enter via a smashed window in the loungeroom.

The male, awoken by the sound of the offenders trying to enter, confronted the armed youth.

The armed youth then allegedly assaulted the male victim with the weapon, causing serious injury to his hand.

Both victims were conveyed to Royal Darwin Hospital for treatment and the offenders remain outstanding.

Police are appealing for anyone who may have witnessed the assault, or who has information or CCTV that could assist investigators, to come forward.

Anyone with information is urged to contact police on 131 444, quote reference P26094663 or report anonymously through Crime Stoppers on 1800 333 000 or via crimestoppersnt.com.au.